解题方法
1 . 在平面直角坐标系
中,曲线
所对应的图形经过伸缩变换
得到图形
.
(1)写出曲线
的平面直角坐标方程;
(2)点
在曲线
上,求点
到直线
的距离的最小值及此时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f25834d8218c53cb975c2a2fe7442a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f97b2cdc5ea45d928caf2731b76217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(1)写出曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4a659fc83bde199b45145bf674f4c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2023-04-28更新
|
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6卷引用:四川省成都市城厢中学校2022-2023学年高二下学期期中考试数学(文)试题
名校
解题方法
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a711be3a0bdc81438c51b2464c1af2b0.png)
(1)求
的最小正周期;
(2)已知函数
的图象按
变换得函数
的图象
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a711be3a0bdc81438c51b2464c1af2b0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d298e0bf8f44fab39aee2197c7c0e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa49ef3e4023278ead164c5477f64194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213ccfda14df700015b54f694d08a96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
3 . (1)在极坐标系中,已知点
,请将
点的极坐标化为直角坐标;
(2)在平面直角坐标系中,求曲线
经过伸缩变换
后的曲线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ae348b88131bcb064eaa2cdb50954b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)在平面直角坐标系中,求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90af67e4c90e378ade7773722e805b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e5643c2bdc7b11293fb0a2b3fe91ce.png)
您最近一年使用:0次
2022-05-09更新
|
388次组卷
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2卷引用:四川省成都外国语学校2021-2022学年高二下学期期中考试理科数学试题
4 . 在平面直角坐标系中,
为曲线
(
为参数)上的动点,将
点纵坐标变为原来的
倍,横坐标变为原来的一半得到点
,记点
的轨迹为
,以坐标原点
为极点,
轴非负半轴为极轴建立极坐标系.
(1)求曲线
的极坐标方程;
(2)
,
是曲线
上不同于
的两点,且
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00afaf633e26e4a17fd117a85272329c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299e193c0bb7580f2e0a6f122634f098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096981ff98f0b3de05fffb6f97a020f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac12555d310f9dd75bf748bff959ff3.png)
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9卷引用:四川省泸州市泸县第四中学2021-2022学年高二下学期期中数学理科试题
四川省泸州市泸县第四中学2021-2022学年高二下学期期中数学理科试题黑龙江省哈尔滨市第三中学2021届高三下学期三模数学(理)试题黑龙江省哈尔滨市第三中学2021届高三第三次模拟考试数学(文科)试题黑龙江省哈尔滨市第三中学校2021届高三三模数学(文)试题云南省云天化中学2022届高三摸底测试数学(理)试题云南省云天化中学2022届高三摸底测试数学(文)试题(已下线)押第22题 极坐标与参数方程-备战2021年高考数学(文)临考题号押题(全国卷2)(已下线)押第22题 极坐标与参数方程-备战2021年高考数学(理)临考题号押题(全国卷2)云南省水富县云天化中学2020-2021学年高二下学期期末数学(理)试题
名校
5 . 在平面直角坐标系
中,曲线
参数方程为
为参数),将曲线
上所有点的横坐标变为原来的
,纵坐标变为原来的
,得到曲线
.
(1)求曲线
的普通方程;
(2)过点
且倾斜角为
的直线
与曲线
交于
两点,求
取得最小值时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d745327e4af6a314b8254c2fb3e0df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c9708ef0dc6d6f5dcf6596d3e4f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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2卷引用:四川省成都石室中学2019-2020学年高三上学期期中数学(理)试题